From 2065bc070dcd1f88a1f5ba3dd6ef0139a9a441ec Mon Sep 17 00:00:00 2001 From: Gatis Paeglis Date: Fri, 24 Oct 2014 16:31:48 +0200 Subject: platforminputcontexts: use libxkbcommon compose key API Our implementation of compose table parser was added on Mar, 2013. libxkbcommon added APIs for the same thing in Oct, 2014 (ver: 0.5.0). After removing RHEL 6.6 from the list of supported platforms we were able to move the minimal required libxkbcommon version to 0.5.0. Now we can use the xkbcommon-compose APIs on all supported platforms. With this patch we can drop nearly 1000 lines of maintenance burden. This patch fixes user reported issues with our implementation. Known issues: - Testing revealed that xkbcommon-compose does not support non-utf8 locales, and that is by design - https://github.com/xkbcommon/libxkbcommon/issues/76 Our implementation did work for those locales too, but it is unclear if anyone actually uses non-utf8 locales. It is a corner case (work-arounds existing) and likely a configuration error on the users' system. - Looking at the release notes for versions above 0.6.1, only one issue that stands out. Compose input does not work on system with tr_TR.UTF-8 locale, fixed in 0.7.1. Compose input works fine when using e.g. en_US.UTF-8 locale with Turkish keyboard layout. Note: With Qt 5.13 we have removed Ubuntu 16.04 and openSUSE 42.3 from CI: Ubuntu 16.04 - 0.5.0 openSUSE 42.3 - 0.6.1 CI for Qt 5.13 has: Ubuntu 18.04 - 0.8.0 RHEL-7.4 - 0.7.1 openSUSE 15.0 - 0.8.1 Currently the minimal required libxkbcommon version in src/gui/configure.json is set to 0.5.0, but we could bump it to 0.7.1 to avoid known issues from above, but that is a decision for a separate patch. [ChangeLog][plugins][platforminputcontexts] Now using libxkbcommon-compose APIs for compose key input, instead of Qt's own implementation. Fixes: QTBUG-42181 Fixes: QTBUG-53663 Fixes: QTBUG-48657 Change-Id: I79aafe2bc601293844066e7e5f5eddd3719c6bba Reviewed-by: Giulio Camuffo Reviewed-by: Johan Helsing --- .../platforminputcontexts/compose/compose.pro | 8 +- .../compose/generator/qtablegenerator.cpp | 658 --------------------- .../compose/generator/qtablegenerator.h | 145 ----- .../compose/qcomposeplatforminputcontext.cpp | 289 +++------ .../compose/qcomposeplatforminputcontext.h | 33 +- .../compose/qcomposeplatforminputcontextmain.cpp | 4 +- src/plugins/platforms/xcb/qxcbintegration.cpp | 2 + src/plugins/platforms/xcb/qxcbkeyboard.cpp | 6 + src/plugins/platforms/xcb/qxcbkeyboard.h | 1 + 9 files changed, 99 insertions(+), 1047 deletions(-) delete mode 100644 src/plugins/platforminputcontexts/compose/generator/qtablegenerator.cpp delete mode 100644 src/plugins/platforminputcontexts/compose/generator/qtablegenerator.h (limited to 'src/plugins') diff --git a/src/plugins/platforminputcontexts/compose/compose.pro b/src/plugins/platforminputcontexts/compose/compose.pro index 68bc2c3466..2e2f8600c3 100644 --- a/src/plugins/platforminputcontexts/compose/compose.pro +++ b/src/plugins/platforminputcontexts/compose/compose.pro @@ -3,18 +3,14 @@ TARGET = composeplatforminputcontextplugin QT += core-private gui-private SOURCES += $$PWD/qcomposeplatforminputcontextmain.cpp \ - $$PWD/qcomposeplatforminputcontext.cpp \ - $$PWD/generator/qtablegenerator.cpp \ + $$PWD/qcomposeplatforminputcontext.cpp -HEADERS += $$PWD/qcomposeplatforminputcontext.h \ - $$PWD/generator/qtablegenerator.h \ +HEADERS += $$PWD/qcomposeplatforminputcontext.h QMAKE_USE_PRIVATE += xkbcommon include($$OUT_PWD/../../../gui/qtgui-config.pri) -DEFINES += X11_PREFIX='\\"$$QMAKE_X11_PREFIX\\"' - OTHER_FILES += $$PWD/compose.json PLUGIN_TYPE = platforminputcontexts diff --git a/src/plugins/platforminputcontexts/compose/generator/qtablegenerator.cpp b/src/plugins/platforminputcontexts/compose/generator/qtablegenerator.cpp deleted file mode 100644 index b5a0a5bbeb..0000000000 --- a/src/plugins/platforminputcontexts/compose/generator/qtablegenerator.cpp +++ /dev/null @@ -1,658 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the plugins of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#include "qtablegenerator.h" - -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#include - -#include - -#include // LC_CTYPE -#include // strchr, strncmp, etc. -#include // strncasecmp -#include // LC_CTYPE - -static const quint32 SupportedCacheVersion = 1; - -/* - In short on how and why the "Compose" file is cached: - - The "Compose" file is large, for en_US it's likely located at: - /usr/share/X11/locale/en_US.UTF-8/Compose - and it has about 6000 string lines. - Q(Gui)Applications parse this file each time they're created. On modern CPUs - it incurs a 4-10 ms startup penalty of each Qt gui app, on older CPUs - - tens of ms or more. - Since the "Compose" file (almost) never changes using a pre-parsed - cache file instead of the "Compose" file is a good idea to improve Qt5 - application startup time by about 5+ ms (or tens of ms on older CPUs). - - The cache file contains the contents of the QComposeCacheFileHeader struct at the - beginning followed by the pre-parsed contents of the "Compose" file. - - struct QComposeCacheFileHeader stores - (a) The cache version - in the unlikely event that some day one might need - to break compatibility. - (b) The (cache) file size. - (c) The lastModified field tracks if anything changed since the last time - the cache file was saved. - If anything did change then we read the compose file and save (cache) it - in binary/pre-parsed format, which should happen extremely rarely if at all. -*/ - -struct QComposeCacheFileHeader -{ - quint32 cacheVersion; - // The compiler will add 4 padding bytes anyway. - // Reserve them explicitly to possibly use in the future. - quint32 reserved; - quint64 fileSize; - qint64 lastModified; -}; - -// localHostName() copied from qtbase/src/corelib/io/qlockfile_unix.cpp -static QByteArray localHostName() -{ - QByteArray hostName(512, Qt::Uninitialized); - if (gethostname(hostName.data(), hostName.size()) == -1) - return QByteArray(); - hostName.truncate(strlen(hostName.data())); - return hostName; -} - -/* - Reads metadata about the Compose file. Later used to determine if the - compose cache should be updated. The fileSize field will be zero on failure. -*/ -static QComposeCacheFileHeader readFileMetadata(const QString &path) -{ - quint64 fileSize = 0; - qint64 lastModified = 0; - const QByteArray pathBytes = QFile::encodeName(path); - QT_STATBUF st; - if (QT_STAT(pathBytes.data(), &st) == 0) { - lastModified = st.st_mtime; - fileSize = st.st_size; - } - QComposeCacheFileHeader info = { 0, 0, fileSize, lastModified }; - return info; -} - -static const QString getCacheFilePath() -{ - QFile machineIdFile("/var/lib/dbus/machine-id"); - QString machineId; - if (machineIdFile.exists()) { - if (machineIdFile.open(QIODevice::ReadOnly)) - machineId = QString::fromLatin1(machineIdFile.readAll().trimmed()); - } - if (machineId.isEmpty()) - machineId = localHostName(); - const QString dirPath = QStandardPaths::writableLocation(QStandardPaths::GenericCacheLocation); - - if (QSysInfo::ByteOrder == QSysInfo::BigEndian) - return dirPath + QLatin1String("/qt_compose_cache_big_endian_") + machineId; - return dirPath + QLatin1String("/qt_compose_cache_little_endian_") + machineId; -} - -// Returns empty vector on failure -static QVector loadCache(const QComposeCacheFileHeader &composeInfo) -{ - QVector vec; - const QString cacheFilePath = getCacheFilePath(); - QFile inputFile(cacheFilePath); - - if (!inputFile.open(QIODevice::ReadOnly)) - return vec; - QComposeCacheFileHeader cacheInfo; - // use a "buffer" variable to make the line after this one more readable. - char *buffer = reinterpret_cast(&cacheInfo); - - if (inputFile.read(buffer, sizeof cacheInfo) != sizeof cacheInfo) - return vec; - if (cacheInfo.fileSize == 0) - return vec; - // using "!=" just in case someone replaced with a backup that existed before - if (cacheInfo.lastModified != composeInfo.lastModified) - return vec; - if (cacheInfo.cacheVersion != SupportedCacheVersion) - return vec; - const QByteArray pathBytes = QFile::encodeName(cacheFilePath); - QT_STATBUF st; - if (QT_STAT(pathBytes.data(), &st) != 0) - return vec; - const off_t fileSize = st.st_size; - if (fileSize > 1024 * 1024 * 5) { - // The cache file size is usually about 150KB, so if its size is over - // say 5MB then somebody inflated the file, abort. - return vec; - } - const off_t bufferSize = fileSize - (sizeof cacheInfo); - const size_t elemSize = sizeof (struct QComposeTableElement); - const int elemCount = bufferSize / elemSize; - const QByteArray ba = inputFile.read(bufferSize); - const char *data = ba.data(); - // Since we know the number of the (many) elements and their size in - // advance calling vector.reserve(..) seems reasonable. - vec.reserve(elemCount); - - for (int i = 0; i < elemCount; i++) { - const QComposeTableElement *elem = - reinterpret_cast(data + (i * elemSize)); - vec.push_back(*elem); - } - return vec; -} - -// Returns true on success, false otherwise. -static bool saveCache(const QComposeCacheFileHeader &info, const QVector &vec) -{ - const QString filePath = getCacheFilePath(); -#if QT_CONFIG(temporaryfile) - QSaveFile outputFile(filePath); -#else - QFile outputFile(filePath); -#endif - if (!outputFile.open(QIODevice::WriteOnly)) - return false; - const char *data = reinterpret_cast(&info); - - if (outputFile.write(data, sizeof info) != sizeof info) - return false; - data = reinterpret_cast(vec.constData()); - const qint64 size = vec.size() * (sizeof (struct QComposeTableElement)); - - if (outputFile.write(data, size) != size) - return false; -#if QT_CONFIG(temporaryfile) - return outputFile.commit(); -#else - return true; -#endif -} - -TableGenerator::TableGenerator() : m_state(NoErrors), - m_systemComposeDir(QString()) -{ - initPossibleLocations(); - QString composeFilePath = findComposeFile(); -#ifdef DEBUG_GENERATOR -// don't use cache when in debug mode. - if (!composeFilePath.isEmpty()) - qDebug() << "Using Compose file from: " << composeFilePath; -#else - QComposeCacheFileHeader fileInfo = readFileMetadata(composeFilePath); - if (fileInfo.fileSize != 0) - m_composeTable = loadCache(fileInfo); -#endif - if (m_composeTable.isEmpty() && cleanState()) { - if (composeFilePath.isEmpty()) { - m_state = MissingComposeFile; - } else { - QFile composeFile(composeFilePath); - composeFile.open(QIODevice::ReadOnly); - parseComposeFile(&composeFile); - orderComposeTable(); - if (m_composeTable.isEmpty()) { - m_state = EmptyTable; -#ifndef DEBUG_GENERATOR -// don't save cache when in debug mode - } else { - fileInfo.cacheVersion = SupportedCacheVersion; - saveCache(fileInfo, m_composeTable); -#endif - } - } - } -#ifdef DEBUG_GENERATOR - printComposeTable(); -#endif -} - -void TableGenerator::initPossibleLocations() -{ - // Compose files come as a part of Xlib library. Xlib doesn't provide - // a mechanism how to retrieve the location of these files reliably, since it was - // never meant for external software to parse compose tables directly. Best we - // can do is to hardcode search paths. To add an extra system path use - // the QTCOMPOSE environment variable - m_possibleLocations.reserve(7); - if (qEnvironmentVariableIsSet("QTCOMPOSE")) - m_possibleLocations.append(QString::fromLocal8Bit(qgetenv("QTCOMPOSE"))); - m_possibleLocations.append(QStringLiteral("/usr/share/X11/locale")); - m_possibleLocations.append(QStringLiteral("/usr/local/share/X11/locale")); - m_possibleLocations.append(QStringLiteral("/usr/lib/X11/locale")); - m_possibleLocations.append(QStringLiteral("/usr/local/lib/X11/locale")); - m_possibleLocations.append(QStringLiteral(X11_PREFIX "/share/X11/locale")); - m_possibleLocations.append(QStringLiteral(X11_PREFIX "/lib/X11/locale")); -} - -QString TableGenerator::findComposeFile() -{ - // check if XCOMPOSEFILE points to a Compose file - if (qEnvironmentVariableIsSet("XCOMPOSEFILE")) { - const QString path = QFile::decodeName(qgetenv("XCOMPOSEFILE")); - if (QFile::exists(path)) - return path; - else - qWarning("$XCOMPOSEFILE doesn't point to an existing file"); - } - - // check if user’s home directory has a file named .XCompose - if (cleanState()) { - QString path = qgetenv("HOME") + QLatin1String("/.XCompose"); - if (QFile::exists(path)) - return path; - } - - // check for the system provided compose files - if (cleanState()) { - QString table = composeTableForLocale(); - if (cleanState()) { - if (table.isEmpty()) - // no table mappings for the system's locale in the compose.dir - m_state = UnsupportedLocale; - else { - QString path = QDir(systemComposeDir()).filePath(table); - if (QFile::exists(path)) - return path; - } - } - } - return QString(); -} - -QString TableGenerator::composeTableForLocale() -{ - QByteArray loc = locale().toUpper().toUtf8(); - QString table = readLocaleMappings(loc); - if (table.isEmpty()) - table = readLocaleMappings(readLocaleAliases(loc)); - return table; -} - -bool TableGenerator::findSystemComposeDir() -{ - bool found = false; - for (int i = 0; i < m_possibleLocations.size(); ++i) { - QString path = m_possibleLocations.at(i); - if (QFile::exists(path + QLatin1String("/compose.dir"))) { - m_systemComposeDir = path; - found = true; - break; - } - } - - if (!found) { - // should we ask to report this in the qt bug tracker? - m_state = UnknownSystemComposeDir; - qWarning("Qt Warning: Could not find a location of the system's Compose files. " - "Consider setting the QTCOMPOSE environment variable."); - } - - return found; -} - -QString TableGenerator::systemComposeDir() -{ - if (m_systemComposeDir.isNull() - && !findSystemComposeDir()) { - return QLatin1String("$QTCOMPOSE"); - } - - return m_systemComposeDir; -} - -QString TableGenerator::locale() const -{ - char *name = setlocale(LC_CTYPE, (char *)0); - return QLatin1String(name); -} - -QString TableGenerator::readLocaleMappings(const QByteArray &locale) -{ - QString file; - if (locale.isEmpty()) - return file; - - QFile mappings(systemComposeDir() + QLatin1String("/compose.dir")); - if (mappings.open(QIODevice::ReadOnly)) { - const int localeNameLength = locale.size(); - const char * const localeData = locale.constData(); - - char l[1024]; - // formating of compose.dir has some inconsistencies - while (!mappings.atEnd()) { - int read = mappings.readLine(l, sizeof(l)); - if (read <= 0) - break; - - char *line = l; - if (*line >= 'a' && *line <= 'z') { - // file name - while (*line && *line != ':' && *line != ' ' && *line != '\t') - ++line; - if (!*line) - continue; - const char * const composeFileNameEnd = line; - *line = '\0'; - ++line; - - // locale name - while (*line && (*line == ' ' || *line == '\t')) - ++line; - const char * const lc = line; - while (*line && *line != ' ' && *line != '\t' && *line != '\n') - ++line; - *line = '\0'; - if (localeNameLength == (line - lc) && !strncasecmp(lc, localeData, line - lc)) { - file = QString::fromLocal8Bit(l, composeFileNameEnd - l); - break; - } - } - } - mappings.close(); - } - return file; -} - -QByteArray TableGenerator::readLocaleAliases(const QByteArray &locale) -{ - QFile aliases(systemComposeDir() + QLatin1String("/locale.alias")); - QByteArray fullLocaleName; - if (aliases.open(QIODevice::ReadOnly)) { - while (!aliases.atEnd()) { - char l[1024]; - int read = aliases.readLine(l, sizeof(l)); - char *line = l; - if (read && ((*line >= 'a' && *line <= 'z') || - (*line >= 'A' && *line <= 'Z'))) { - const char *alias = line; - while (*line && *line != ':' && *line != ' ' && *line != '\t') - ++line; - if (!*line) - continue; - *line = 0; - if (locale.size() == (line - alias) - && !strncasecmp(alias, locale.constData(), line - alias)) { - // found a match for alias, read the real locale name - ++line; - while (*line && (*line == ' ' || *line == '\t')) - ++line; - const char *fullName = line; - while (*line && *line != ' ' && *line != '\t' && *line != '\n') - ++line; - *line = 0; - fullLocaleName = fullName; -#ifdef DEBUG_GENERATOR - qDebug() << "Alias for: " << alias << "is: " << fullLocaleName; - break; -#endif - } - } - } - aliases.close(); - } - return fullLocaleName; -} - -bool TableGenerator::processFile(const QString &composeFileName) -{ - QFile composeFile(composeFileName); - if (composeFile.open(QIODevice::ReadOnly)) { - parseComposeFile(&composeFile); - return true; - } - qWarning() << QString(QLatin1String("Qt Warning: Compose file: \"%1\" can't be found")) - .arg(composeFile.fileName()); - return false; -} - -TableGenerator::~TableGenerator() -{ -} - -QVector TableGenerator::composeTable() const -{ - return m_composeTable; -} - -void TableGenerator::parseComposeFile(QFile *composeFile) -{ -#ifdef DEBUG_GENERATOR - qDebug() << "TableGenerator::parseComposeFile: " << composeFile->fileName(); -#endif - - char line[1024]; - while (!composeFile->atEnd()) { - composeFile->readLine(line, sizeof(line)); - if (*line == '<') - parseKeySequence(line); - else if (!strncmp(line, "include", 7)) - parseIncludeInstruction(QString::fromLocal8Bit(line)); - } - - composeFile->close(); -} - -void TableGenerator::parseIncludeInstruction(QString line) -{ - // Parse something that looks like: - // include "/usr/share/X11/locale/en_US.UTF-8/Compose" - QString quote = QStringLiteral("\""); - line.remove(0, line.indexOf(quote) + 1); - line.chop(line.length() - line.indexOf(quote)); - - // expand substitutions if present - line.replace(QLatin1String("%H"), QString(qgetenv("HOME"))); - line.replace(QLatin1String("%L"), systemComposeDir() + QLatin1Char('/') + composeTableForLocale()); - line.replace(QLatin1String("%S"), systemComposeDir()); - - processFile(line); -} - -ushort TableGenerator::keysymToUtf8(quint32 sym) -{ - QByteArray chars; - int bytes; - chars.resize(8); - bytes = xkb_keysym_to_utf8(sym, chars.data(), chars.size()); - if (bytes == -1) - qWarning("TableGenerator::keysymToUtf8 - buffer too small"); - - chars.resize(bytes-1); - -#ifdef DEBUG_GENERATOR - QTextCodec *codec = QTextCodec::codecForLocale(); - qDebug() << QString("keysym - 0x%1 : utf8 - %2").arg(QString::number(sym, 16)) - .arg(codec->toUnicode(chars)); -#endif - return QString::fromUtf8(chars).at(0).unicode(); -} - -static inline int fromBase8(const char *s, const char *end) -{ - int result = 0; - while (*s && s != end) { - if (*s < '0' || *s > '7') - return 0; - result *= 8; - result += *s - '0'; - ++s; - } - return result; -} - -static inline int fromBase16(const char *s, const char *end) -{ - int result = 0; - while (*s && s != end) { - result *= 16; - if (*s >= '0' && *s <= '9') - result += *s - '0'; - else if (*s >= 'a' && *s <= 'f') - result += *s - 'a' + 10; - else if (*s >= 'A' && *s <= 'F') - result += *s - 'A' + 10; - else - return 0; - ++s; - } - return result; -} - -void TableGenerator::parseKeySequence(char *line) -{ - // we are interested in the lines with the following format: - // : "♬" U266c # BEAMED SIXTEENTH NOTE - char *keysEnd = strchr(line, ':'); - if (!keysEnd) - return; - - QComposeTableElement elem; - // find the composed value - strings may be direct text encoded in the locale - // for which the compose file is to be used, or an escaped octal or hexadecimal - // character code. Octal codes are specified as "\123" and hexadecimal codes as "\0x123a". - char *composeValue = strchr(keysEnd, '"'); - if (!composeValue) - return; - ++composeValue; - - char *composeValueEnd = strchr(composeValue, '"'); - if (!composeValueEnd) - return; - - // if composed value is a quotation mark adjust the end pointer - if (composeValueEnd[1] == '"') - ++composeValueEnd; - - if (*composeValue == '\\' && composeValue[1] >= '0' && composeValue[1] <= '9') { - // handle octal and hex code values - char detectBase = composeValue[2]; - if (detectBase == 'x') { - // hexadecimal character code - elem.value = keysymToUtf8(fromBase16(composeValue + 3, composeValueEnd)); - } else { - // octal character code - elem.value = keysymToUtf8(fromBase8(composeValue + 1, composeValueEnd)); - } - } else { - // handle direct text encoded in the locale - if (*composeValue == '\\') - ++composeValue; - elem.value = QString::fromLocal8Bit(composeValue, composeValueEnd - composeValue).at(0).unicode(); - ++composeValue; - } - -#ifdef DEBUG_GENERATOR - // find the comment - elem.comment = QString::fromLocal8Bit(composeValueEnd + 1).trimmed(); -#endif - - // find the key sequence and convert to X11 keysym - char *k = line; - const char *kend = keysEnd; - - for (int i = 0; i < QT_KEYSEQUENCE_MAX_LEN; i++) { - // find the next pair of angle brackets and get the contents within - while (k < kend && *k != '<') - ++k; - char *sym = ++k; - while (k < kend && *k != '>') - ++k; - *k = '\0'; - if (k < kend) { - elem.keys[i] = xkb_keysym_from_name(sym, (xkb_keysym_flags)0); - if (elem.keys[i] == XKB_KEY_NoSymbol) { - if (!strcmp(sym, "dead_inverted_breve")) - elem.keys[i] = XKB_KEY_dead_invertedbreve; - else if (!strcmp(sym, "dead_double_grave")) - elem.keys[i] = XKB_KEY_dead_doublegrave; -#ifdef DEBUG_GENERATOR - else - qWarning() << QString("Qt Warning - invalid keysym: %1").arg(sym); -#endif - } - } else { - elem.keys[i] = 0; - } - } - m_composeTable.append(elem); -} - -void TableGenerator::printComposeTable() const -{ -#ifdef DEBUG_GENERATOR -# ifndef QT_NO_DEBUG_STREAM - if (m_composeTable.isEmpty()) - return; - - QDebug ds = qDebug() << "output:\n"; - ds.nospace(); - const int tableSize = m_composeTable.size(); - for (int i = 0; i < tableSize; ++i) { - const QComposeTableElement &elem = m_composeTable.at(i); - ds << "{ {"; - for (int j = 0; j < QT_KEYSEQUENCE_MAX_LEN; j++) { - ds << hex << showbase << elem.keys[j] << ", "; - } - ds << "}, " << hex << showbase << elem.value << ", \"\" }, // " << elem.comment << " \n"; - } -# endif -#endif -} - -void TableGenerator::orderComposeTable() -{ - // Stable-sorting to ensure that the item that appeared before the other in the - // original container will still appear first after the sort. This property is - // needed to handle the cases when user re-defines already defined key sequence - std::stable_sort(m_composeTable.begin(), m_composeTable.end(), ByKeys()); -} - diff --git a/src/plugins/platforminputcontexts/compose/generator/qtablegenerator.h b/src/plugins/platforminputcontexts/compose/generator/qtablegenerator.h deleted file mode 100644 index 4f58358f4e..0000000000 --- a/src/plugins/platforminputcontexts/compose/generator/qtablegenerator.h +++ /dev/null @@ -1,145 +0,0 @@ -/**************************************************************************** -** -** Copyright (C) 2016 The Qt Company Ltd. -** Contact: https://www.qt.io/licensing/ -** -** This file is part of the plugins of the Qt Toolkit. -** -** $QT_BEGIN_LICENSE:LGPL$ -** Commercial License Usage -** Licensees holding valid commercial Qt licenses may use this file in -** accordance with the commercial license agreement provided with the -** Software or, alternatively, in accordance with the terms contained in -** a written agreement between you and The Qt Company. For licensing terms -** and conditions see https://www.qt.io/terms-conditions. For further -** information use the contact form at https://www.qt.io/contact-us. -** -** GNU Lesser General Public License Usage -** Alternatively, this file may be used under the terms of the GNU Lesser -** General Public License version 3 as published by the Free Software -** Foundation and appearing in the file LICENSE.LGPL3 included in the -** packaging of this file. Please review the following information to -** ensure the GNU Lesser General Public License version 3 requirements -** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. -** -** GNU General Public License Usage -** Alternatively, this file may be used under the terms of the GNU -** General Public License version 2.0 or (at your option) the GNU General -** Public license version 3 or any later version approved by the KDE Free -** Qt Foundation. The licenses are as published by the Free Software -** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 -** included in the packaging of this file. Please review the following -** information to ensure the GNU General Public License requirements will -** be met: https://www.gnu.org/licenses/gpl-2.0.html and -** https://www.gnu.org/licenses/gpl-3.0.html. -** -** $QT_END_LICENSE$ -** -****************************************************************************/ - -#ifndef QTABLEGENERATOR_H -#define QTABLEGENERATOR_H - -#include -#include -#include -#include - -#include - -static Q_CONSTEXPR int QT_KEYSEQUENCE_MAX_LEN = 6; - -//#define DEBUG_GENERATOR - -/* Whenever QComposeTableElement gets modified supportedCacheVersion - from qtablegenerator.cpp must be bumped. */ -struct QComposeTableElement { - uint keys[QT_KEYSEQUENCE_MAX_LEN]; - uint value; -#ifdef DEBUG_GENERATOR - QString comment; -#endif -}; - -#ifndef DEBUG_GENERATOR -QT_BEGIN_NAMESPACE -Q_DECLARE_TYPEINFO(QComposeTableElement, Q_PRIMITIVE_TYPE); -QT_END_NAMESPACE -#endif - -struct ByKeys -{ - using uint_array = uint[QT_KEYSEQUENCE_MAX_LEN]; - using result_type = bool; - - bool operator()(const uint_array &lhs, const uint_array &rhs) const Q_DECL_NOTHROW - { - return std::lexicographical_compare(lhs, lhs + QT_KEYSEQUENCE_MAX_LEN, - rhs, rhs + QT_KEYSEQUENCE_MAX_LEN); - } - - bool operator()(const uint_array &lhs, const QComposeTableElement &rhs) const Q_DECL_NOTHROW - { - return operator()(lhs, rhs.keys); - } - - bool operator()(const QComposeTableElement &lhs, const uint_array &rhs) const Q_DECL_NOTHROW - { - return operator()(lhs.keys, rhs); - } - - bool operator()(const QComposeTableElement &lhs, const QComposeTableElement &rhs) const Q_DECL_NOTHROW - { - return operator()(lhs.keys, rhs.keys); - } -}; - -class TableGenerator -{ - -public: - enum TableState - { - UnsupportedLocale, - EmptyTable, - UnknownSystemComposeDir, - MissingComposeFile, - NoErrors - }; - - TableGenerator(); - ~TableGenerator(); - - void parseComposeFile(QFile *composeFile); - void printComposeTable() const; - void orderComposeTable(); - - QVector composeTable() const; - TableState tableState() const { return m_state; } - -protected: - bool processFile(const QString &composeFileName); - void parseKeySequence(char *line); - void parseIncludeInstruction(QString line); - - QString findComposeFile(); - bool findSystemComposeDir(); - QString systemComposeDir(); - QString composeTableForLocale(); - - ushort keysymToUtf8(quint32 sym); - - QString readLocaleMappings(const QByteArray &locale); - QByteArray readLocaleAliases(const QByteArray &locale); - void initPossibleLocations(); - bool cleanState() const { return m_state == NoErrors; } - QString locale() const; - -private: - QVector m_composeTable; - TableState m_state; - QString m_systemComposeDir; - QList m_possibleLocations; -}; - -#endif // QTABLEGENERATOR_H diff --git a/src/plugins/platforminputcontexts/compose/qcomposeplatforminputcontext.cpp b/src/plugins/platforminputcontexts/compose/qcomposeplatforminputcontext.cpp index 81a730232c..6b9687c22d 100644 --- a/src/plugins/platforminputcontexts/compose/qcomposeplatforminputcontext.cpp +++ b/src/plugins/platforminputcontexts/compose/qcomposeplatforminputcontext.cpp @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2016 The Qt Company Ltd. +** Copyright (C) 2019 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the plugins of the Qt Toolkit. @@ -36,131 +36,100 @@ ** $QT_END_LICENSE$ ** ****************************************************************************/ - #include "qcomposeplatforminputcontext.h" #include #include -#include -#include +#include QT_BEGIN_NAMESPACE -//#define DEBUG_COMPOSING +Q_LOGGING_CATEGORY(lcXkbCompose, "qt.xkb.compose") -static const int ignoreKeys[] = { - Qt::Key_Shift, - Qt::Key_Control, - Qt::Key_Meta, - Qt::Key_Alt, - Qt::Key_CapsLock, - Qt::Key_Super_L, - Qt::Key_Super_R, - Qt::Key_Hyper_L, - Qt::Key_Hyper_R, - Qt::Key_Mode_switch -}; +QComposeInputContext::QComposeInputContext() +{ + setObjectName(QStringLiteral("QComposeInputContext")); + qCDebug(lcXkbCompose, "using xkb compose input context"); +} -static const int composingKeys[] = { - Qt::Key_Multi_key, - Qt::Key_Dead_Grave, - Qt::Key_Dead_Acute, - Qt::Key_Dead_Circumflex, - Qt::Key_Dead_Tilde, - Qt::Key_Dead_Macron, - Qt::Key_Dead_Breve, - Qt::Key_Dead_Abovedot, - Qt::Key_Dead_Diaeresis, - Qt::Key_Dead_Abovering, - Qt::Key_Dead_Doubleacute, - Qt::Key_Dead_Caron, - Qt::Key_Dead_Cedilla, - Qt::Key_Dead_Ogonek, - Qt::Key_Dead_Iota, - Qt::Key_Dead_Voiced_Sound, - Qt::Key_Dead_Semivoiced_Sound, - Qt::Key_Dead_Belowdot, - Qt::Key_Dead_Hook, - Qt::Key_Dead_Horn, - Qt::Key_Dead_Stroke, - Qt::Key_Dead_Abovecomma, - Qt::Key_Dead_Abovereversedcomma, - Qt::Key_Dead_Doublegrave, - Qt::Key_Dead_Belowring, - Qt::Key_Dead_Belowmacron, - Qt::Key_Dead_Belowcircumflex, - Qt::Key_Dead_Belowtilde, - Qt::Key_Dead_Belowbreve, - Qt::Key_Dead_Belowdiaeresis, - Qt::Key_Dead_Invertedbreve, - Qt::Key_Dead_Belowcomma, - Qt::Key_Dead_Currency, - Qt::Key_Dead_a, - Qt::Key_Dead_A, - Qt::Key_Dead_e, - Qt::Key_Dead_E, - Qt::Key_Dead_i, - Qt::Key_Dead_I, - Qt::Key_Dead_o, - Qt::Key_Dead_O, - Qt::Key_Dead_u, - Qt::Key_Dead_U, - Qt::Key_Dead_Small_Schwa, - Qt::Key_Dead_Capital_Schwa, - Qt::Key_Dead_Greek, - Qt::Key_Dead_Lowline, - Qt::Key_Dead_Aboveverticalline, - Qt::Key_Dead_Belowverticalline, - Qt::Key_Dead_Longsolidusoverlay -}; +QComposeInputContext::~QComposeInputContext() +{ + xkb_compose_state_unref(m_composeState); + xkb_compose_table_unref(m_composeTable); +} -QComposeInputContext::QComposeInputContext() - : m_tableState(TableGenerator::EmptyTable) - , m_compositionTableInitialized(false) +void QComposeInputContext::ensureInitialized() { - clearComposeBuffer(); + if (m_initialized) + return; + + if (!m_XkbContext) { + qCWarning(lcXkbCompose) << "error: xkb context has not been set on" << metaObject()->className(); + return; + } + + m_initialized = true; + const char *const locale = setlocale(LC_CTYPE, ""); + qCDebug(lcXkbCompose) << "detected locale (LC_CTYPE):" << locale; + + m_composeTable = xkb_compose_table_new_from_locale(m_XkbContext, locale, XKB_COMPOSE_COMPILE_NO_FLAGS); + if (m_composeTable) + m_composeState = xkb_compose_state_new(m_composeTable, XKB_COMPOSE_STATE_NO_FLAGS); + + if (!m_composeTable) { + qCWarning(lcXkbCompose, "failed to create compose table"); + return; + } + if (!m_composeState) { + qCWarning(lcXkbCompose, "failed to create compose state"); + return; + } } bool QComposeInputContext::filterEvent(const QEvent *event) { - const QKeyEvent *keyEvent = (const QKeyEvent *)event; - // should pass only the key presses - if (keyEvent->type() != QEvent::KeyPress) { + auto keyEvent = static_cast(event); + if (keyEvent->type() != QEvent::KeyPress) return false; - } - // if there were errors when generating the compose table input - // context should not try to filter anything, simply return false - if (m_compositionTableInitialized && (m_tableState & TableGenerator::NoErrors) != TableGenerator::NoErrors) + if (!inputMethodAccepted()) return false; - int keyval = keyEvent->key(); - int keysym = 0; + // lazy initialization - we don't want to do this on an app startup + ensureInitialized(); - if (ignoreKey(keyval)) + if (!m_composeTable || !m_composeState) return false; - if (!composeKey(keyval) && keyEvent->text().isEmpty()) - return false; + xkb_compose_state_feed(m_composeState, keyEvent->nativeVirtualKey()); - keysym = keyEvent->nativeVirtualKey(); + switch (xkb_compose_state_get_status(m_composeState)) { + case XKB_COMPOSE_COMPOSING: + return true; + case XKB_COMPOSE_CANCELLED: + reset(); + return false; + case XKB_COMPOSE_COMPOSED: + { + const int size = xkb_compose_state_get_utf8(m_composeState, nullptr, 0); + QVarLengthArray buffer(size + 1); + xkb_compose_state_get_utf8(m_composeState, buffer.data(), buffer.size()); + QString composedText = QString::fromUtf8(buffer.constData()); - int nCompose = 0; - while (nCompose < QT_KEYSEQUENCE_MAX_LEN && m_composeBuffer[nCompose] != 0) - nCompose++; + QInputMethodEvent event; + event.setCommitString(composedText); + QCoreApplication::sendEvent(m_focusObject, &event); - if (nCompose == QT_KEYSEQUENCE_MAX_LEN) { reset(); - nCompose = 0; - } - - m_composeBuffer[nCompose] = keysym; - // check sequence - if (checkComposeTable()) return true; - - return false; + } + case XKB_COMPOSE_NOTHING: + return false; + default: + Q_UNREACHABLE(); + return false; + } } bool QComposeInputContext::isValid() const @@ -175,7 +144,8 @@ void QComposeInputContext::setFocusObject(QObject *object) void QComposeInputContext::reset() { - clearComposeBuffer(); + if (m_composeState) + xkb_compose_state_reset(m_composeState); } void QComposeInputContext::update(Qt::InputMethodQueries q) @@ -183,125 +153,4 @@ void QComposeInputContext::update(Qt::InputMethodQueries q) QPlatformInputContext::update(q); } -static bool isDuplicate(const QComposeTableElement &lhs, const QComposeTableElement &rhs) -{ - return std::equal(lhs.keys, lhs.keys + QT_KEYSEQUENCE_MAX_LEN, - QT_MAKE_CHECKED_ARRAY_ITERATOR(rhs.keys, QT_KEYSEQUENCE_MAX_LEN)); -} - -bool QComposeInputContext::checkComposeTable() -{ - if (!m_compositionTableInitialized) { - TableGenerator reader; - m_tableState = reader.tableState(); - - m_compositionTableInitialized = true; - if ((m_tableState & TableGenerator::NoErrors) == TableGenerator::NoErrors) { - m_composeTable = reader.composeTable(); - } else { -#ifdef DEBUG_COMPOSING - qDebug( "### FAILED_PARSING ###" ); -#endif - // if we have errors, don' try to look things up anyways. - reset(); - return false; - } - } - Q_ASSERT(!m_composeTable.isEmpty()); - QVector::const_iterator it = - std::lower_bound(m_composeTable.constBegin(), m_composeTable.constEnd(), m_composeBuffer, ByKeys()); - - // prevent dereferencing an 'end' iterator, which would result in a crash - if (it == m_composeTable.constEnd()) - it -= 1; - - QComposeTableElement elem = *it; - // would be nicer if qLowerBound had API that tells if the item was actually found - if (m_composeBuffer[0] != elem.keys[0]) { -#ifdef DEBUG_COMPOSING - qDebug( "### no match ###" ); -#endif - reset(); - return false; - } - // check if compose buffer is matched - for (int i=0; i < QT_KEYSEQUENCE_MAX_LEN; i++) { - - // check if partial match - if (m_composeBuffer[i] == 0 && elem.keys[i]) { -#ifdef DEBUG_COMPOSING - qDebug("### partial match ###"); -#endif - return true; - } - - if (m_composeBuffer[i] != elem.keys[i]) { -#ifdef DEBUG_COMPOSING - qDebug("### different entry ###"); -#endif - reset(); - return i != 0; - } - } -#ifdef DEBUG_COMPOSING - qDebug("### match exactly ###"); -#endif - - // check if the key sequence is overwriten - see the comment in - // TableGenerator::orderComposeTable() - int next = 1; - do { - // if we are at the end of the table, then we have nothing to do here - if (it + next != m_composeTable.constEnd()) { - QComposeTableElement nextElem = *(it + next); - if (isDuplicate(elem, nextElem)) { - elem = nextElem; - next++; - continue; - } else { - break; - } - } - break; - } while (true); - - commitText(elem.value); - reset(); - - return true; -} - -void QComposeInputContext::commitText(uint character) const -{ - QInputMethodEvent event; - event.setCommitString(QChar(character)); - QCoreApplication::sendEvent(m_focusObject, &event); -} - -bool QComposeInputContext::ignoreKey(int keyval) const -{ - for (uint i = 0; i < (sizeof(ignoreKeys) / sizeof(ignoreKeys[0])); i++) - if (keyval == ignoreKeys[i]) - return true; - - return false; -} - -bool QComposeInputContext::composeKey(int keyval) const -{ - for (uint i = 0; i < (sizeof(composingKeys) / sizeof(composingKeys[0])); i++) - if (keyval == composingKeys[i]) - return true; - - return false; -} - -void QComposeInputContext::clearComposeBuffer() -{ - for (uint i=0; i < (sizeof(m_composeBuffer) / sizeof(int)); i++) - m_composeBuffer[i] = 0; -} - -QComposeInputContext::~QComposeInputContext() {} - QT_END_NAMESPACE diff --git a/src/plugins/platforminputcontexts/compose/qcomposeplatforminputcontext.h b/src/plugins/platforminputcontexts/compose/qcomposeplatforminputcontext.h index 4830959665..b1de1b1094 100644 --- a/src/plugins/platforminputcontexts/compose/qcomposeplatforminputcontext.h +++ b/src/plugins/platforminputcontexts/compose/qcomposeplatforminputcontext.h @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2016 The Qt Company Ltd. +** Copyright (C) 2019 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the plugins of the Qt Toolkit. @@ -36,24 +36,24 @@ ** $QT_END_LICENSE$ ** ****************************************************************************/ - #ifndef QCOMPOSEPLATFORMINPUTCONTEXT_H #define QCOMPOSEPLATFORMINPUTCONTEXT_H -#include +#include -#include +#include -#include "generator/qtablegenerator.h" +#include QT_BEGIN_NAMESPACE +Q_DECLARE_LOGGING_CATEGORY(lcXkbCompose) + class QEvent; class QComposeInputContext : public QPlatformInputContext { Q_OBJECT - public: QComposeInputContext(); ~QComposeInputContext(); @@ -62,21 +62,22 @@ public: void setFocusObject(QObject *object) override; void reset() override; void update(Qt::InputMethodQueries) override; + bool filterEvent(const QEvent *event) override; + // This invokable is called from QXkbCommon::setXkbContext(). + Q_INVOKABLE void setXkbContext(struct xkb_context *context) { m_XkbContext = context; } + protected: - void clearComposeBuffer(); - bool ignoreKey(int keyval) const; - bool composeKey(int keyval) const; - bool checkComposeTable(); - void commitText(uint character) const; + void ensureInitialized(); private: - QObject *m_focusObject; - QVector m_composeTable; - uint m_composeBuffer[QT_KEYSEQUENCE_MAX_LEN]; - TableGenerator::TableState m_tableState; - bool m_compositionTableInitialized; + bool m_initialized = false; + xkb_context *m_context = nullptr; + xkb_compose_table *m_composeTable = nullptr; + xkb_compose_state *m_composeState = nullptr; + QObject *m_focusObject = nullptr; + struct xkb_context *m_XkbContext = nullptr; }; QT_END_NAMESPACE diff --git a/src/plugins/platforminputcontexts/compose/qcomposeplatforminputcontextmain.cpp b/src/plugins/platforminputcontexts/compose/qcomposeplatforminputcontextmain.cpp index 6b33df65b9..d062d4fd6a 100644 --- a/src/plugins/platforminputcontexts/compose/qcomposeplatforminputcontextmain.cpp +++ b/src/plugins/platforminputcontexts/compose/qcomposeplatforminputcontextmain.cpp @@ -1,6 +1,6 @@ /**************************************************************************** ** -** Copyright (C) 2016 The Qt Company Ltd. +** Copyright (C) 2019 The Qt Company Ltd. ** Contact: https://www.qt.io/licensing/ ** ** This file is part of the plugins of the Qt Toolkit. @@ -61,7 +61,7 @@ QComposeInputContext *QComposePlatformInputContextPlugin::create(const QString & if (system.compare(system, QLatin1String("compose"), Qt::CaseInsensitive) == 0 || system.compare(system, QLatin1String("xim"), Qt::CaseInsensitive) == 0) return new QComposeInputContext; - return 0; + return nullptr; } QT_END_NAMESPACE diff --git a/src/plugins/platforms/xcb/qxcbintegration.cpp b/src/plugins/platforms/xcb/qxcbintegration.cpp index ed9e87a036..a70c7db923 100644 --- a/src/plugins/platforms/xcb/qxcbintegration.cpp +++ b/src/plugins/platforms/xcb/qxcbintegration.cpp @@ -357,6 +357,8 @@ void QXcbIntegration::initialize() m_inputContext.reset(QPlatformInputContextFactory::create(icStr)); if (!m_inputContext && icStr != defaultInputContext && icStr != QLatin1String("none")) m_inputContext.reset(QPlatformInputContextFactory::create(defaultInputContext)); + + defaultConnection()->keyboard()->initialize(); } void QXcbIntegration::moveToScreen(QWindow *window, int screen) diff --git a/src/plugins/platforms/xcb/qxcbkeyboard.cpp b/src/plugins/platforms/xcb/qxcbkeyboard.cpp index 6eb31d67bd..d0e02ecdd1 100644 --- a/src/plugins/platforms/xcb/qxcbkeyboard.cpp +++ b/src/plugins/platforms/xcb/qxcbkeyboard.cpp @@ -565,6 +565,12 @@ QXcbKeyboard::~QXcbKeyboard() xcb_key_symbols_free(m_key_symbols); } +void QXcbKeyboard::initialize() +{ + auto inputContext = QGuiApplicationPrivate::platformIntegration()->inputContext(); + QXkbCommon::setXkbContext(inputContext, m_xkbContext.get()); +} + void QXcbKeyboard::selectEvents() { #if QT_CONFIG(xkb) diff --git a/src/plugins/platforms/xcb/qxcbkeyboard.h b/src/plugins/platforms/xcb/qxcbkeyboard.h index 75071d045f..e35c82ad24 100644 --- a/src/plugins/platforms/xcb/qxcbkeyboard.h +++ b/src/plugins/platforms/xcb/qxcbkeyboard.h @@ -63,6 +63,7 @@ public: ~QXcbKeyboard(); + void initialize(); void selectEvents(); void handleKeyPressEvent(const xcb_key_press_event_t *event); -- cgit v1.2.3